Manufacture of stable, dry, and readily-soluble vat preparations for dyeing



Patented Dec. 2%, 1922.

m r 1 a tihlllfiell ri-rrnss, on S11\TDLINGE1.T,.NEJ or "sooner-on TEE LUCIUS e; estuarine, or GERMANY.

01 HUL ill/MANUFACTURE 6F STABLE, DRY, AND READIL'Y-SGLUBLE VAT :D'YEING.

No Drawing.

To all mm it may concern: I 1

Be it known that We, KARL Tninss and BN9; at (1) Sindlingen, near Hochst-on-the- Main, Germany, (2) at Hochston-the- Main, lionigsteinerstrasse 2, Germany, have invented certain new and useful Improve ments in the lllanuiacture of Stable, Dry, and Readily-Soluble Vat Preparations for Dyeing, of which the following is a specification.

In the American application N 0. etQelfiM filed 23, 8, 21 is described a process for the manufacture of stable, dry and readily soluble vat-preparations from quinone vatdye'stutls dyeing Wool an indigo by evaporating to dryness, preferably in a vacuum, leuco-alcali salt of quinone "vat-dyestuffs dyeing 'WOOl together with an alkali salt of leueo-indigo, with or without the addition of agglutinating or diluting agents.

.i'in improvement or modification ot' the itore oing process With the same result conss i ts in replacing the alkali salts otlf leucoindigo by such of halogen-indi os, as far as the latter can still be regarded as vat-dyestuffs dyeing Wool.

The following examplesillustrate the in vention:

1. A paste prepared from 250 kilos of monobroin-indigo-White and 100 kilos of the reduced brown sulphurous quinone vatdyestufl obtainable for instance according to U. S. Patent 1,128,368 of 16:2.1915 is dissolved in a mixture of 300 kilos of caustic soda lye of l0 Baum and. 300 kilos of Water. strength) and 10 kilos of hydrosulphite are added and the mass then evaporated to dryness, first under stirring and in a high vacuum and later, as soon as the masshas become rather thick, in flat cups in a vacuum box. The vatpreparation thus obtained shows a dark lustre and can be easily dissolved. in Water to a vat ready for use, hich dyes Wool in fine reddish-black tints.

2. It the quinone vat-dyestuif in example 1 from the U. S. Patent 1,1 8,368 is sub stituted by the sulphurous vat-dyestull obtained from in.m -dinitl'odiarylidodichlor- GILOY, citizens ofGerma-ny, residing 150 kilos of molasses per cent.

i n KEVUBM. snare "It-rein, anathema, .e con-ronn'rron rannaae rrons nos Application filed March 17, 1922. Serial No. 544,657.

quinone' and ammonium sulphide (comp. U. S. Patent 1,128,368) a vat preparation is obtained which, dissolved in Water, dyes ivool in blackish-blue tints.

3. 175 kilos of 1i)0110lJl'OHllllCllgO-Willtti and 175 kilos of the reduced yellow 'quinone vatdyestufl', obtainable from quinone and pchloraniline, are dissolved in a mixture oi": 280 kilos of caustic soda lye of 40 Baum and 280 kilosoi' Water. To this solution are added 175 kilos of molasses (50 per cent strength) and 10 kilos of hydrosulphite and the mixture then evaporatedto drynessin a high vacuum until it has become thick. The mass is finally completely evaporated to dryness in flat cups in a vacuum box. The vat-preparation thus obtained shows a greenish-black and lustrous aspect, is readily soluble in Water and dyes Wool green.

If the brown dyestull in Examples 1 and 2 or the yellow dyeing para-para -dichlordianilidoquinoue-a in Example 3 is substituted by the olivo-dyestuil', described in speoifications of the U. S. Patent 1,151,628 and German Patent 282,501, dry and solid vat-preparations are obtained Which dye WOOl in the corresponding mixed tints. Instead of monobromindigo may be used monochlon indigo or dibromindigo.

Claims.

1. As a new process, the herein described manufacture o stable, dry and readily soluble vat-preparations from quinone vatdyestuffs for W001 and halogen-indigos, which comprises evaporating to dryness, an aqueous mixture of an alkali leuco-salt of the quinone vat-dyestuil and a-nialkali salt of leuco halogen-indigo;

2. As a new process, the herein described manufacture of stable, dry and readily soluble vat-preparations from quinone vat-dye studs for WOOl and halogen-indigos, which comprises evaporating to dryness in a vacuum an aqueous mi ure of an alkali leucosalt ofthe quinone vat-dyestul f and an alkali salt of leuco halogen-indigo.

3. As a new process, the herein described manufacture of stable. dry and readily soluble vat preparations from quinone vat-dyelor WOOl and llllOgGlldflCllQ'OS, which comprises evaporating to dryness,'an aqueous mixture of an alkali 'leuco-salt of the quinone Vat-dyestuffs and an alkali salt of kali salt of leuco halogen-indigo and an agglutinating or diluting agent.

5. As new products,vat preparations from quinone vat dyestuiis dyeing wool and halo gen-indigos, which preparations contain an alkali leuco-salt ofsaid quinone vat-dyeily soluble.

salt of leuoo stuffs together with an alkali dry and read halogen-indigo and are stable, ily soluble.

6. As new products, vat preparations from quinone Vat dyestuffs dyeing wool and halogen-indigos, which preparations contain an alkali leuco-salt of said quinone vat-dyestuffs together with an alkali salt of leuco halogen-indigo and an agglutinating or diluting agent, which are stable, dry and read- 1 In testimony whereof, we aflix our signatures.

KARL THIESS. I FRANZ GILOY. Witnesses 1 v HERMANN WAGNER,

Fonns'r HoLzArrnL 

